Impact: Moderate Public Date: 2019-07-24 CWE: CWE-284 Bugzilla: 1730477: CVE-2019-13565 openldap: ACL restrictions bypass due to sasl_ssf value being set permanently An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-13565 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss EWS 2 | openldap | Out of support scope |
| Red Hat JBoss EAP 5 | openldap | Out of support scope |
| Red Hat JBoss Core Services 1 | openldap | Out of support scope |
| Red Hat Enterprise Linux 8 | openldap | Affected |
| Red Hat Enterprise Linux 7 | openldap | Out of support scope |
| Red Hat Enterprise Linux 7 | compat-openldap | Not affected |
| Red Hat Enterprise Linux 6 | openldap | Out of support scope |
| Red Hat Enterprise Linux 6 | compat-openldap | Not affected |
| Red Hat Enterprise Linux 5 | openldap | Out of support scope |
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